CS2001YDWF20

Overview

The CS2001YDWF20 is a dual-output power management IC from onsemi, integrating a synchronous buck converter and a low-dropout linear regulator (LDO). It provides a 1.2 A switching output and a 5.0 V, 100 mA LDO output. The device operates within a supply voltage range of 4.9 V to 5.1 V and supports an operating temperature range of -40°C to 85°C. It features a 150 kHz switching frequency and includes a reset function. The component is housed in a 20-SOIC package.

Feature Summary

• Integrates a synchronous buck converter with a 1.2 A current capability for efficient step-down regulation.
• Includes a dedicated 5.0 V, 100 mA low-dropout linear regulator for stable auxiliary power.
• Incorporates a built-in reset generator to ensure system reliability during power transitions.

Applications

• Portable electronic devices requiring multiple regulated voltage rails
• Embedded systems needing isolated power domains
• Industrial control modules with strict thermal constraints

Procurement Notes

Verify the specific suffix 'YDWF20' against official onsemi documentation to confirm pinout and thermal specifications. Ensure the procurement source provides valid traceability and authenticity certificates. Cross-reference the 20-SOIC package dimensions with mechanical drawings prior to PCB layout finalization to prevent assembly errors.

Selection Notes

Select this component when a compact solution combining high-efficiency switching and precise linear regulation is required. It is suitable for designs powered by nominal 5 V sources where space is limited. Consider the 150 kHz frequency for EMI management and the integrated reset feature for simplified system supervision requirements.

Part Context

This part belongs to onsemi's PMIC portfolio, designed for applications requiring combined switching and linear regulation. It addresses the need for reduced component count in multi-rail power architectures. The integration of buck and LDO stages allows for optimized efficiency and noise performance in sensitive analog circuits.

Replacement Considerations

Consult official onsemi substitution guides for verified alternatives. Do not assume functional compatibility with other PMICs without verifying electrical parameters and pin configurations.

FAQ

What is the maximum output current for the switching regulator?

The synchronous buck converter provides a maximum output current of 1.2 A.

Does the CS2001YDWF20 include a reset function?

Yes, the device integrates a reset generator to monitor supply voltages and assert a reset signal.